Microwave second-harmonic generation due to mobile carriers in doped graphene lacking center-of-inversion symmetry

2019 ◽  
Vol 126 (5) ◽  
pp. 054301 ◽  
Author(s):  
Vl. A. Margulis ◽  
E. E. Muryumin
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Inversion Symmetry ◽  
Doped Graphene

Optical Second Harmonic Generation Method For Silicon Material Monitoring And Characterization During Ion Implantation And Annealing Processes

1995 ◽  
Vol 406 ◽  
Author(s):  
Y. Gu ◽  
Y. C. Chou ◽  
T. Vu ◽  
K. Yen ◽  
Y. S. Lin ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Second Harmonic Generation ◽  
Thermal Annealing ◽  
Harmonic Generation ◽  
Lattice Structure ◽  
Second Harmonic ◽  
Harmonic Signal ◽  
Inversion Symmetry ◽  
Silicon Material ◽  
Optical Second Harmonic Generation

AbstractNon-linear optical second harmonic generation (SHG) from bulk silicon is very weak because of the inversion symmetry of the silicon lattice structure. However, when silicon material is subjected to the ion implantation and thermal annealing processes, the inversion symmetry will be broken. As a result, the optical second harmonic generation from the material will increase, and the characteristics of the second harmonic signal are related to the material conditions. In this study, we compare SHG results with Transmission Electron Microscope (TEM) observations for silicon material that has been treated with phosphorous ion implantation and rapid thermal annealing, and suggest that the SHG method may be used for the detection and monitoring of impurities and defects during ion implantation and thermal annealing processes.

scholarly journals Electric-Field Switchable Second-Harmonic Generation in Bilayer MoS2 by Inversion Symmetry Breaking

Nano Letters ◽  
2016 ◽  
Vol 17 (1) ◽  
pp. 392-398 ◽  
Author(s):  
J. Klein ◽  
J. Wierzbowski ◽  
A. Steinhoff ◽  
M. Florian ◽  
M. Rösner ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Electric Field ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Inversion Symmetry
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